Slotting-machine.



No. 675,255. Patnted May 28, IBM.

r. w. TANNETT-WALKEB.

SLOTTING MACHINE.

(Application filed In. 11, 1901.)

(No Model.)

TN: uomus PETERS co., mo'rou'ma. summon. D. 'c.

FFICE.

ATENT FREDERICK WILLIAM TANNETT-WALKER, OF LEEDS, ENGLAND.

SLOTTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 675,255, dated May 28, 1901.

Application filed January 11, 1901. Serial No. 42,923. (No model.)

To all whom it may concern:

Be it known that I, FREDERICK WILLIAM TANNETT-WALKER, engineer, a subject of the Queen of Great Britain, residing at Hunslet, Leeds, in the county of York, England, have invented certain new and useful Improvements in slotting-Machines, of which the. following is a specification.

According to this invention the slottingbeam is moved in one direction by ahydraulic ram and in the other direction by ordinary gearing. Preferably the machine is vertical, the slotting-beam being raised by the ram and forced down by the gearing. The slottingbeam carries a lug, which works against a pair of tappets adjustably fixed to a vertical rod connected to an arm on a rocking shaft. This shaft works the belt-shifter, clutch, or other mechanism for putting the gearing into and out of action and also the valve for admitting water to and allowing it to escape from the hydraulic cylinder.

Figure l is a front elevation, Fig. 2 a side elevation, and Fig. 3a plan, of a slotting-machine constructed according to this invention.

a is the slotting-beam,working in guides in the frame.

I) is a hydraulic cylinder, whose ram 6' is fixed to a lug a on the slotting-beam.

a is a rack fixed to the slotting-beam, and c is a pinion on the shaft 0', gearing with it.

a is 2. lug fixed to the slotting-beam, and d is a rod passingv through it. This rod has stops d d adj ustably fixed to it, against which the lug 0, comes at the end of the up-anddown strokes of the slotting-beam. The rod d is pivoted to one end of an arm e, fixed to the rocking shaft f. The shaft f has fixed to it an arm f, connected by a link 9 to a lever h, pivoted at h and connected by a link j to the rod of the valve 70, by which water is admitted to and allowed to escape from the cylinder 17. The shaft fhas fixed to it a bevelwheel f gearing with the bevel-wheel Z, fixed to the shaft Z, which is operated by the handle Z so that the machine can be controlled by hand. The shaft 0 has fixed to it the toothed wheel 0 gearing with the pinion m on the shaft m, which has on it the fast and loose belt-pulleys m m The belt-shifter n is pivoted to the bell-crank lever at, which is connected by the link n to the arm a fixed to the rocking shaft f.

The slotting-beam ais raised by admitting water into the cylinder b, the belt being on the loose pulley m during the upstroke. When the beam at reaches the top, the luga on it comes against the stop d, thus rocking the shaft f. This movement of the shaft f by the mechailism above described moves the valve is of the hydraulic cylinder, allowing the water to escape from it and also shift the belt from the loose pulley m to the front pulley m so causing the beam to be forced down again by the gearing. Similarly when the beam reaches the bottom the lug a comes against the stop d and rocks the shaft f back again, thus admitting water to the cylinder 1) and shifting the belt from the fast pulley m to the loose pulley m What I claim is- 1. The combination of a slotting-beam, a hydraulic cylinder and ram moving the beam in one direction gearing moving it in the other direction, a rocking shaft, an arm fixed to the shaft, stops carried by the arm, a lug on the beam engaging with the stops and means operated by the shaft for putting the ram and the gearing into and out of action.

2. The combination of a slotting-beam, a hydraulic cylinder, a ram working in the cylinder and fixed to the beam moving it in one direction, arack on the beam and gearing engaging with the rack and moving the beam in the other direction.

3. The combination of a slotting-beam, a

inder and fixed to the beam moving it in one direction, a rack on the beam, gearing engag ing with the rack and moving the beam in the other direction, a rocking shaft, an arm fixed to the shaft, stops carried by the arm, a lug on the beam engaging with the stops and means operated by the shaft for putting the ram and the gearing into and out of ac tion.

FREDERICK WILLIAM TANNETf-WALKER.

Witnesses:

W. J. MOELLROY,

BENJ. HOLGATE.

hydraulic cylinder, a ram working in the cy1-- 

